#include <iostream>

using namespace std;

int main()
{
	ios_base::sync_with_stdio(false);

	int S;
	char team_type;

	while (cin >> S >> team_type) {
		switch (team_type) {
		case 'K':
			if (S == 1)
				cout << 1 << endl;
			else
				cout << 4 << endl;
			break;
		case 'N':
			if (S < 3)
				cout << 1 << endl;
			else if (S == 3)
				cout << 2 << endl;
			else
				cout << 3 << endl;
			break;
		case 'B':
			cout << S << endl;
			break;
		case 'R':
			cout << S << endl;

		}
	}
	return 0;
}